将图像居中放置在另一个图像C#上 [英] Center image on another Image C#

问题描述

我对C#GDI +图形还很陌生，

Hi I am fairly new to C# GDI+ graphics,

我想在另一幅图像上绘制图像，该图像应在图像上固定高度和宽度的容器中水平和垂直居中

I want to draw an image over another, which should be centered horizontally and vertically in a fixed height and width container on an image,

我试图通过水平居中来做到这一点，并且输出结果很奇怪.

I tried to do this with horizontal centering and the output is weird..

我正在分享我的尝试方式的注释代码，让我知道是否有更简单的方法，我只想缩放图像并居中..

I am sharing the commented code of how I am trying to do it, let me know if there is any easier way to do it, I just want to scale and center the image ..

           //The parent image resolution is 4143x2330 
            //the container for child image is 2957x1456
              Image childImage = Image.FromFile(path.Text.Trim());
              Image ParentImage = (Image)EC_Automation.Properties.Resources.t1;
              Bitmap bmp2 = (Bitmap)ParentImage;
              Graphics graphic = Graphics.FromImage(ParentImage); 
             graphic.InterpolationMode = InterpolationMode.HighQualityBicubic;
             double posX = (2957 / 2.0d) - (childImage.Width / 2.0d); 
            //HAlf of the container size - Half of the image size 
            //should make it center in container
            graphic.DrawImage((Image)childImage,
                new Rectangle(new Point((int)posX, 420), new Size( 2957, 1456))); //Drawing image 

推荐答案

解决了这个问题，我正在绘制固定宽度的图像，而基于宽高比和新高度，它应该具有新的宽度

Solved it , I was drawing the image of fixed width, whereas it should have been with a new width based on the aspect ratio and new height,

我也在尝试从Container中查找图像的中心，它应该是整个父图像的中心

Also I was taking trying to find the center of the image from Container, which should have been the center of the whole parent Image

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